diff --git a/lucky.cpp b/lucky.cpp new file mode 100644 index 00000000..953fa396 --- /dev/null +++ b/lucky.cpp @@ -0,0 +1,33 @@ +#include +#define bool int + +/* Returns 1 if n is a lucky no. ohterwise returns 0*/ +bool isLucky(int n) +{ + static int counter = 2; + + /*variable next_position is just for readability of + the program we can remove it and use n only */ + int next_position = n; + if(counter > n) + return 1; + if(n%counter == 0) + return 0; + + /*calculate next position of input no*/ + next_position -= next_position/counter; + + counter++; + return isLucky(next_position); +} + +/*Driver function to test above function*/ +int main() +{ + int x = 5; + if( isLucky(x) ) + printf("%d is a lucky no.", x); + else + printf("%d is not a lucky no.", x); + getchar(); +} pFad - Phonifier reborn

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